I have two N.ventrata?? They out grew there pots so I repotted them. I was out of orchid bark so I went to home depot to get more. This the first time I have bought orchid bark there so I was having trouble finding it. After about 25 minutes I found it. It was made by Schultz and it was the only kind that they had. So I bought it. To make a long story short after I finished repotting the plants I looked on the bag and I noticed, it said "contains an Exculsive Potting Mineral improves drainage and moisture retention!" I looked closer and I bought Orchid Mix not Orchid bark.
On the back it says "A Unique Potting Material, *Formulated with Western fir bark, horticultural charcoal, and ceramic nuggets that improve drainage, aeration, and moisture retention.
The ingredients are Regionally formulated from 40-50% organic matrials(derived from one or more of the following: aged raw fir bark or aged raw pine bark), arcillite, and horticultural charcoal. The arcillite looks like small flat white rocks.
I didn't notice the diffrence when I was mixing it because I was in my garage and it was a little dark in there.
The bright side of this is orchids and cp's grow in simalar conditions, so maybe it's not that bad , or did I pretty much just kill two of my nepenthes?